On Tue, 3 Jan 2006, Steve Kargl wrote:
> The first URL notes the same problem with "mount option <rw> is unknown".
> The second URL points to the CVS repository for sbin/mount/mount.c. It
> should have read "rev. 1.77". In particular,
>
> Revision 1.77 / (download) - annotate - [select for diffs], Sat Dec 3
> 01:57:58 2005 UTC (4 weeks, 3 days ago) by rodrigc
> Branch: MAIN
> Changes since 1.76: +1 -1 lines
> Diff to previous 1.76 (colored)
>
> Simplify parsing of mount options by passing
> "rw" option down to kernel, since vfs_donmount() can now parse it.
>
> "Simplify" is a misspelling of "Break possibility of using older kernels
> with newer sbin/mount command". This, of course, makes panic recovery more
> difficult.
>
> I don't recall what the outcome of using a newer kernel with an old
> sbin/mount is.
I think that, other than some windows of breakage, that does work with a
sufficiently recent kernel. The middle bit was a bit more bumpy than I expect
was planned by the committer. :-) At least, it's my theory it works, because
somehow all my machines got past the bumpy bit (eventually).
Robert N M Watson